Question: Which toponym of Classical Cepheid variable has part of constellation that is Cepheus?
Paraphrase: What is the name of the Classical Cephied variable that is part of the Cepheus constellation?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q10451997 wdt:P138 ?answer . ?answer wdt:P59 wd:Q10468}
Answer: Delta Cephei